What is index?Index
A single number that tracks how a basket of assets is doing overall, such as the S&P 500.
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- Indexes & ETFsHow to Choose an ETF
There are often several ETFs tracking the same index. Compare fees, tracking difference, fund size and bid-ask spread, and work out which is cheaper for long-term holding vs. frequent trading.
- Indexes & ETFsWhat Is an Index?
An index boils a basket of stocks down to a single number. It's the market's thermometer.
Related terms
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